Hybspec

P1415B

Średni

Secondary Air System — Fault (BMW)

OBD-II (EN): Secondary Air Injection System Malfunction

Code P1415B — Secondary Air System — Fault (BMW). Symptoms: check engine light. Possible cause: faulty secondary air pump. Professional diagnosis recommended.

Symptoms

Check engine light, loud secondary air pump operation after cold start

Possible causes

Faulty secondary air pump, faulty switching valve (relay/solenoid), clogged hoses, stuck check valve

Affected systems

Silnik spalinowyUkład wydechowy

Related codes

Code P1415B appears in these brands

Go to messages and symptoms for your brand — there we analyze this code together with other typical alerts.

Does code P1415B require professional diagnostics?

The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.